Build amd64 first

.github/workflows/docker.yml

@@ -28,26 +28,42 @@ env:
   FORCE_COLOR: 1
 
 jobs:
-  build:
+  # We build only amd64 first to catch failures faster.
+  build-amd64:
     uses: ./.github/workflows/docker-build.yml
     with:
       runsOn: ubuntu-22.04
       platforms: linux/amd64
 
   test-amd64:
-    needs: build
+    needs: build-amd64
     uses: ./.github/workflows/docker-test.yml
     strategy:
       matrix:
         target: [aiida-core-base, aiida-core-with-services, aiida-core-dev]
     with:
       runsOn: ubuntu-22.04
-      images: ${{ needs.build.outputs.images }}
+      images: ${{ needs.build-amd64.outputs.images }}
       target: ${{ matrix.target }}
 
+  build:
+    uses: ./.github/workflows/docker-build.yml
+    with:
+      runsOn: ubuntu-22.04
+      platforms: linux/amd64,linux/arm64
+
+  publish-ghcr:
+    needs: [build, test-amd64]
+    uses: ./.github/workflows/docker-publish.yml
+    secrets: inherit
+    with:
+      runsOn: ubuntu-22.04
+      images: ${{ needs.build.outputs.images }}
+      registry: ghcr.io
+
   # IMPORTANT: To save arm64 runners resources,
   # we run the test only when pushing to main.
-  # We also only test the aiida-core-dev image
+  # We also only test the aiida-core-dev image.
   test-arm64:
     needs: build
     if: >-
@@ -59,15 +75,6 @@ jobs:
       images: ${{ needs.build.outputs.images }}
       target: aiida-core-dev
 
-  publish-ghcr:
-    needs: [build, test-amd64]
-    uses: ./.github/workflows/docker-publish.yml
-    secrets: inherit
-    with:
-      runsOn: ubuntu-22.04
-      images: ${{ needs.build.outputs.images }}
-      registry: ghcr.io
-
   publish-dockerhub:
     if: >-
       github.repository == 'aiidateam/aiida-core'